51146240

素因数分解:

$2^9\times 5^1\times {\mathrm{19979}}^1$

素因数の和:20002

約数の個数: 40

約数和(自身を含む): 122637240

約数和(自身を除く): 71491000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1280, 2560, 19979, 39958, 79916, 99895, 159832, 199790, 319664, 399580, 639328, 799160, 1278656, 1598320, 2557312, 3196640, 5114624, 6393280, 10229248, 12786560, 25573120, 51146240]

約数ペア:

[(1, 51146240), (2, 25573120), (4, 12786560), (5, 10229248), (8, 6393280), (10, 5114624), (16, 3196640), (20, 2557312), (32, 1598320), (40, 1278656), (64, 799160), (80, 639328), (128, 399580), (160, 319664), (256, 199790), (320, 159832), (512, 99895), (640, 79916), (1280, 39958), (2560, 19979)]